In [1]} we proved that if \(\Gamma \)  is an intrinsic \(\lambda \) –Lipschitz graph in \(\mathbb {H}_n, n \ge 2,\)  then, for any ball \(B=B(y,R)\subset \mathbb {H}_n\) ,
\(\int _0^R \int _{B \cap \Gamma } \beta _{\Gamma }(x,r)^2 \,\mathrm {d}\mathcal {H}^{2n+1}(x) \frac{\,\mathrm {d}r}{r} \lesssim _{\lambda } R^{2n+1}. \) 
